02 sensor

1999 GMC YUKON
128 MILES • V8 • 4WD • AUTOMATIC
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ADEEB747
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  • 1 POST
where is -O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 2)
May 19, 2011 at 9:50 PM
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BCMULLEN95
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  • 249 POSTS
Sensor 2 will be the Oxygen sensor after the Catatylitic converter. I am asuming you have the 5.7L engine if so this should help.
sensor 1 bank 1 = left side before cat
sensor 1 bank 2 = right side before cat
sensor 2 bank 1 = left side after cat
sensor 2 bank 2 = right side after cat
Right side Passanger side, Left side is driver side.


May 20, 2011 at 3:01 AM
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MERLIN2021
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  • 17,250 POSTS
right on!
Aug 18, 2011 at 3:07 PM
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